– Lat/Long: 48.71° N 121.99° W
South Twin Sister Weather Forecast
Cascade Range · United StatesIssued: 4 am Mon 28 Sep Local Time
Updates in:
Update imminent hr min s
Issued: 4 am Mon 28 Sep Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryHeavy rain (total 38mm), heaviest during Tue morning. Very mild (max 15°C on Mon afternoon, min 7°C on Tue night). Wind will be generally light. | Days 4–6 Weather SummaryHeavy rain (total 31mm), heaviest during Thu night. Very mild (max 18°C on Sat afternoon, min 9°C on Thu morning). Wind will be generally light. | |||||||||||||||||
Monday 28 | Tuesday 29 | Wednesday 30 | Thursday 1 | Friday 2 | Saturday 3 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  |  |  |  | |  |  | |  | | | | | |  | |
some clouds | some clouds | mod. rain | heavy rain | mod. rain | clear | clear | clear | light rain | light rain | light rain | heavy rain | mod. rain | light rain | clear | clear | some clouds | some clouds | |
Cloud base (m) | 3400 | 2400 | 750 | 550 | 550 | 2000 | 1900 | 6100 | 3050 | 2050 | 650 | 550 | 600 | 700 | 9100 | 6850 | ||
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | 8 | 22 | 7 | — | — | — | 0.1 | 3 | 3 | 17 | 7 | 0.4 | — | — | — | — |
max °C | 13 | 15 | 12 | 12 | 12 | 10 | 11 | 14 | 12 | 10 | 11 | 12 | 12 | 13 | 12 | 15 | 18 | 15 |
min °C | 10 | 13 | 10 | 11 | 11 | 7 | 8 | 14 | 11 | 9 | 10 | 11 | 12 | 13 | 11 | 11 | 17 | 15 |
chill °C | 10 | 13 | 8 | 10 | 10 | 7 | 8 | 14 | 11 | 8 | 9 | 11 | 12 | 13 | 11 | 11 | 17 | 15 |
Freezing level m | 2500 | 2550 | 3050 | 2750 | 2500 | 2200 | 2300 | 2950 | 2800 | 3050 | 3000 | 2900 | 2650 | 2800 | 3600 | 3750 | 4000 | 4000 |
 | 7:01 | — | — | 7:03 | — | — | 7:05 | — | — | 7:05 | — | — | 7:07 | — | — | 7:09 | — | — |
 | — | 6:52 | — | — | 6:51 | — | — | 6:49 | — | — | 6:46 | — | — | 6:45 | — | — | 6:43 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Heavy rain (total 38mm), heaviest during Tue morning. Very mild (max 15°C on Mon afternoon, min 7°C on Tue night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Heavy rain (total 31mm), heaviest during Thu night. Very mild (max 18°C on Sat afternoon, min 9°C on Thu morning). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.